linux-kernel - [PATCH] syscalls: add __NR_kcmp syscall to generic unistd.h

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Message-Id: <1348516024-4992-1-git-send-email-msalter@redhat.com>
Date:	Mon, 24 Sep 2012 15:47:04 -0400
From:	Mark Salter <msalter@...hat.com>
To:	Arnd Bergmann <arnd@...db.de>
Cc:	linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org,
	Mark Salter <msalter@...hat.com>
Subject: [PATCH] syscalls: add __NR_kcmp syscall to generic unistd.h

Commit d97b46a64 added a new syscall (__NR_kcmp) to support checkpoint
restore. It is currently x86-only, but that restriction will be removed
in a subsequent patch. Unfortunately, the kernel checksyscalls script
had a bug which suppressed any warning to other architectures that the
kcmp syscall was not implemented. A patch to checksyscalls is being
tested in linux-next and other architectures are seeing warnings about
kcmp being unimplemented.

This patch adds __NR_kcmp to <asm-generic/unistd.h> so that kcmp is
wired in for architectures using the generic syscall list.

Signed-off-by: Mark Salter <msalter@...hat.com>
---
 include/asm-generic/unistd.h |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)

diff --git a/include/asm-generic/unistd.h b/include/asm-generic/unistd.h
index 991ef01..3748ec9 100644
--- a/include/asm-generic/unistd.h
+++ b/include/asm-generic/unistd.h
@@ -691,9 +691,11 @@ __SC_COMP(__NR_process_vm_readv, sys_process_vm_readv, \
 #define __NR_process_vm_writev 271
 __SC_COMP(__NR_process_vm_writev, sys_process_vm_writev, \
           compat_sys_process_vm_writev)
+#define __NR_kcmp 272
+__SYSCALL(__NR_kcmp, sys_kcmp)

 #undef __NR_syscalls
-#define __NR_syscalls 272
+#define __NR_syscalls 273

 /*
  * All syscalls below here should go away really,
-- 
1.7.9.1

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